The AROS distribution Icaros Desktop has made its next step towards compatibility with legacy Amiga workbench applications, including an entire AROS enviroment compiled for the classic Amiga platform, which is almost binary compatible with the original Amiga OS 3.1 (and its extensions). When the user needs an old program, he or she only has to fire up the AROS M68K environment and run the application. The Amiga virtual machine can optionally be set to run at startup like a system service.

Sure it is, can be easily described like that. Just like Linux is a Unix clone, the underlying tech doesn't need to be exactly the same. But the characteristics (including limitations) were carried over fairly closely.

(which I actually like to a degree, for example with how AROS feels most like classic Amiga OS to me also WRT to GUI; other OS efforts seem to fancy out their GUI for no good reason, sometimes even seemingly without much of a direction)